Bitcoin-Qt version 0.8.6 is now available from: http://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.8.6/

This is a maintenance release to fix a critical bug;we urge all users to upgrade.

Please report bugs using the issue tracker at github: https://github.com/bitcoin/bitcoin/issues

How to Upgrade--------------

If you are running an older version, shut it down. Waituntil it has completely shut down (which might take a few minutes for olderversions), then run the installer (on Windows) or just copy over/Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux).

If you are upgrading from version 0.7.2 or earlier, the first time yourun 0.8.6 your blockchain files will be re-indexed, which will takeanywhere from 30 minutes to several hours, depending on the speed ofyour machine.

- There have been frequent reports of users running out of virtual memory on 32-bit systems during the initial sync. Hence it is recommended to use a 64-bit executable if possible. A 64-bit executable for Windows is planned for 0.9.